Samsung Holds Global DRAM Lead as SK Hynix Gains Ground - Koreabizwire

Samsung's 'lead' is being redefined. Its volume advantage sits in commodity DDR5, while the profit pool has migrated to HBM, where SK Hynix has effectively locked in an oligopoly position through its NVIDIA supply chain. This is not a zero-sum share shift—it is a structural bifurcation of DRAM into two distinct markets: AI-grade memory and consumer-grade volume memory. On the technology stack, HBM4's TSV stacking is pushing toward 16 layers, sharply increasing dependence on CoWoS advanced packaging and EUV lithography. Samsung's P4/P5 yield ramp speed will determine whether it can reclaim AI memory relevance by 2026. On compliance, tightening US export controls on advanced memory to China impose hidden 'de-China' costs on Samsung's Xi'an capacity, while Hynix's domestic Korean fabs benefit from CHIPS Act subsidy tailwinds, creating a structural cost differential. Strategic counterplay: Samsung will likely deploy aggressive HBM4E pricing in H2 2025 to fracture Hynix's long-term agreements. Hynix will accelerate multi-sourcing with AMD and Broadcom to dilute NVIDIA concentration risk. Micron will exploit the HBM3E window to capture 10-15% share. The 12-24 month tail: commodity DRAM margins compress below 15%; HBM becomes the industry's sole 'GPU-like' profit engine. Capacity allocation decisions made in 2025 will lock in the 2027 competitive landscape.